Design and Implementation of Public Security Intelligence Search-Platform Based on Big Data Technology

公安信息化的高速发展积累了丰富的业务数据，种类不断增加、结构不断异化、总量不断增长，截至2014年底，全国公安机关掌握的数据资源已达100多类上千亿条,信息数据已成为继警力资源、装备资源之后的新一类核心资源。搜索是公安信息获取和进行研判的基础手段。传统的全文搜索系统存在大量结果数据“堆积”、再次筛查工作量大、目标结果无法精准定位，使用效率低下等问题。利用分布式计算架构，融合了SolrCloud、Zookeeper、高速缓存等技术手段，以人、车、案为对象重组数据，采用智能分析、对象全景档案等手段，帮助用户在海量数据资源中快速“秒”准目标，从可以获得的全息资源中检索出最符合用户期许的资源。因此，设...The high speed development of public security informationization has accumulated rich business data,Species continue to increase,the structure of continuous alienation, the total amount of continuous growth. As of the end of 2014, the national public security organs to grasp the data resources has reached more than 100 kinds of hundreds of billions of dollars, information data has become a new typ...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201323235

厦门沿海的砂壳纤毛虫(原生动物,纤毛门,砂壳目)

对厦门沿海6个代表性站位砂壳纤毛虫进行了为期1年的采集,共分离鉴定了27种砂壳纤毛虫,其中拟铃虫属Tintinnopsis 20种,薄铃虫属Leprotintinnus 3种,类铃虫属Codonellopsis 2种,领细壳虫属Stenosemella 1种以及网纹虫属Favella 1种。对该5属27种砂壳纤毛虫进行形态学描述,并提供了显微照片,其中侧胀拟铃虫Tintinnopsis ventricosoides Meunier,1910为中国新记录种。国家自然科学基金(91751207和41306125);;海洋公益性行业科研专项经费(201505003-3);;中海石油有限公司项目(CNOOCKJ125FZDXM00TJ001-2014,CNOOC-KJ125FZDXM00ZJ001-2014)资助~

湍流噪声四极子声源的边界通量模型

湍流噪声是众多工程问题的瓶颈。Ffowcs Williams–Hawkings(FW-H)积分是在声比拟理论框架下计算湍流噪声的重要方法。当FW-H积分的积分域不能包含全部的声源区域时,Lighthill应力张量将穿过积分域边界,从而对湍流噪声产生虚假贡献(spurious contribution)。这些虚假贡献可以被积分域外的四极子声源抵消。本文提出了一种四极子声源的边界通量模型,用于模化积分域外的四极子声源对远场噪声的贡献,从而抑制声源穿过积分域边界产生的虚假贡献。该模型基于对流方程模化Lighthill应力张量穿过积分域边界的过程,特色是在谱空间内利用声源扰动在对流中的相速度修正局部对流速度,从而避免了已有模型的数值发散问题。在此过程中,我们利用分部积分将四极子声源的体积法转换为面积分,从而避免了四极子声源体积分引起的巨大计算量和存储量问题。我们采用二维对流涡的远场噪声等标准算例验证了所发展的模型的有效性

Wall-modeled large-eddy simulation of noise generated by turbulence around an appended axisymmetric body of revolution

The directivity of the noise generated by turbulent flows around an underwater vehicle (the fully appended SUBOFF body) is investigated numerically, where the turbulent flows are simulated by using the large eddy simulation (LES) with a non-equilibrium wall model and the noise is calculated by using the Ffowcs Williams and Hawking formulation. The wall-modeled LES reproduces the features of turbulent flows around SUBOFF, such as the attached boundary layers around the hull, separated vortices from appendages and the wrapped vortices in wakes. The coefficients and power spectral density of the wall pressures obtained are in agreement with the previous numerical results and experimental measurements. It is found that the constructive and destructive interferences of lift and side-force dipoles lead to the deviations of the directivities of instantaneous sound pressures from the lift directions. This is different from noise generated by flows around a circular cylinder, where lift dipoles dominate the radiated noise

Clinical study of norfloxacin in the treatment of acute epididymitis

急性精巣上体炎20例に, NFLXを1回200 mg 1日3回14日間投与し, その臨床効果および安全性につき検討した.1) 7日目で著効9例, 有効10例, 無効1例で有効率95%であった.14日目では著効12例, 有効6例, 無効1例で有効率95%であった.2) 14日目では, 発熱, 疼痛, 腫脹すべて消失したものが8例(7日目では2例)と多く, 7日目に比し効果の増大が認められた.3)投与前膿尿の認められたものは, 20例中13例.尿培養陽性は13例中4例であった.これら膿尿および細菌尿に対しても, 本剤はすぐれた効果を示した.4)末梢血中白血球数, 血沈値, CRPについても本剤投与により, 全般に明らかな改善が認められた.5)自他覚副作用および臨床検査値異常変動は全例で認められなかったThe efficacy and safety of Norfloxacin were studied in the treatment of 20 patients with acute epididymitis. Norfloxacin was orally administered at a dose of 200 mg 3 times a day for 14 days. Clinical efficacy rate on the 7th day was 95% (19/20), excellent in 9 cases, moderate in 10 cases and poor in 1 case, and on the 14th day was 95% (18/19), excellent in 12 cases, moderate in 9 cases and poor in 1 case. On the 14th day, fever, pain and swelling had disappeared in 8 cases (in 2 cases on the 7th day). The efficacy on the 14th day was further investigated compared to that on the 7th day. Before treatment with Norfloxacin, in 13 of the 20 patients, pyuria was observed. Cultivating the bacteria was isolated in 4 of the 13 patients. Norfloxacin remarkably affected the treatment of these patients with pyuria and bacteriuria. In the treatment with Norfloxacin, the count of leukocytes, erythrocyte sedimentation rate and CRP were obviously improved. Side effects and abnormal clinical laboratory findings were not observed. From these results, Norfloxacin 600 mg/day, t.i.d was considered useful and safe in the treatment of acute epididymitis

Prediction of Energy Resolution in the JUNO Experiment

International audienceThis paper presents the energy resolution study in the JUNO experiment, incorporating the latest knowledge acquired during the detector construction phase. The determination of neutrino mass ordering in JUNO requires an exceptional energy resolution better than 3% at 1 MeV. To achieve this ambitious goal, significant efforts have been undertaken in the design and production of the key components of the JUNO detector. Various factors affecting the detection of inverse beta decay signals have an impact on the energy resolution, extending beyond the statistical fluctuations of the detected number of photons, such as the properties of liquid scintillator, performance of photomultiplier tubes, and the energy reconstruction algorithm. To account for these effects, a full JUNO simulation and reconstruction approach is employed. This enables the modeling of all relevant effects and the evaluation of associated inputs to accurately estimate the energy resolution. The study reveals an energy resolution of 2.95% at 1 MeV. Furthermore, the study assesses the contribution of major effects to the overall energy resolution budget. This analysis serves as a reference for interpreting future measurements of energy resolution during JUNO data taking. Moreover, it provides a guideline in comprehending the energy resolution characteristics of liquid scintillator-based detectors

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel